Lever for loom pattern mechanism



Oct. 22, 1946. w. A. BLANCHARD 4 2,409,973

LEVER FOR LOOM PATTERN MECHANISM Filed June 6, 1946 23 F1628 9 I Y, W

INVENTOR WILLIAMABLANGHARD 4| 20H Fla/0 so 44 '45l [3444.

ATTORNEY Patented Oct. 22, 1946 UNITED STATES PATENT OFFICE LEVER FORLOOM PATTERN MECHANISM William A. Blanchard, Millbury, Mass assignor toCrompton & Knowles Loom Works, Worcest'ei', Mass, a corporation ofMassachusetts Application June 6, 1946, Serial No. 674,810

This is a continuation in part of my copending application Serial No.615,123, filed September 8, 1945.

This invention relates to improvements in pattern mechanism levers forlooms and more particularly to the vibrator levers used in the wellknownKnowles head. v I

Vibrator levers for the Knowles head and other types of harnessoperating mechanisms have heretofore been made of solid pieces of metal,generally malleable iron. Such levers are heavy and are likely becauseof their weight to cause wearing of the parts which support them andalso the pattern chains which operate them. It is an important object ofmy present invention to make the vibrator lever with top and bottomrails between which is located a sinuous reinforcing wire or the likeextending for the greater part of the length of the lever and welded orotherwise secured to the rails.

The vibrator lever ordinarily has severa1 parts, such as a heel pinbearing at one end, a lock knife lug at the other end, and a patternchain and vibrator gear bearings intermediate its ends, It is a furtherobject of my present invention to secure these parts to the rails insuch manner that they will be held in proper position for cooperationwith the several loom parts which engage them. v

With these and other objects in view which will appear as thedescription proceeds, my invention resides in the combination andarrangement of parts hereinafter described and set forth.

In the accompanying drawing, wherein two forms of the invention areshown,

Fig. l is a side elevation of a; vibrator lever made according to thepreferred form of my invention,

Fig. 2 is a plan view of the vibrator lever looking in the direction ofarrow 2, Fig. l, the vibrator gear, its connector, and the lock knifebeing omitted,

Fig. 3 is an enlarged vertical section on line 33ofFig.l,

Fig. 4 is a bracketed View showing a side and end elevationof the heelpin bearing, V V

Fig. 5 is a bracketed view showing a side elevation and end View of thepattern chain run;

Fig. 6 is a side elevation of the top rail shown in Fig. 1,

Fig. '7 is a plan View looking in the direction of arrow 1, Fig. 6,

Fig. 8 is a side elevation of the bottom rail,

Fig. 9 is a plan view looking in the direction of arrow 9, Fig. 3,

7 claims. (01. 139-77) 2 Fig. 10 is a side elevation of a vibrator levermade according to the modified form of the invention, and A Figs. 11 and12 are enlarged vertical sections on lines,H H and l2|2, respectively,of Fig. 10. Referring particularly to Fig; 1, Ihave shown a vibratorlever V supported at its, left end on a heel pin H and having a patternrun P, a vibrator gear G, and a gear connector C. A look knife Koperated by the loom cooperates with a lock knife lug L at the right endof the lever to lockthe latter either in its down or up position asdetermined by the pattern chain I0. The latter is provided with rollsordinarily of two different diameters so that when a small roll isunderthe run P the vibrator lever will be down, but whena large roll is underthe run the lever will be up. The gear cooperates withwell-known'mutilated top and bottom gear cylinders not shown herein. All

of the foregoing; except as pointed out hereinafter, is of the usualrelationship found in the well known Knowles head. i

In carrying the preferred form of my invention into effect I provide thevibrator lever ,V with top and bottom rails l5 and I6, respectively,which extend betweenthe heel pin bearing H and the lock knife lug L. Asinuous metallic reinforcing member l9 formed preferably ofwire extendsbetween the rails l5 and I6 and has its various bends welded orotherwise secured to the rails.

The heel pin bearing ii is provided with a downwardly opening slot 2!]to receive the heelpin H, and has a notch 2! to receive the left end ofthe upper rail l5, A side notch 22 formed in the bearing l 'l receivesthe upwardly bent left end 23 ofthebottomraillt. p Adjacent to the rightend of the top railthere i an upwardly opening notch 25 which receivesthe bearing 26 for the vibrator gear G. The bearing 26 is welded 0rbrazed to the top rail l5, and

the right end of the latter extends along and is welded to the top oflug L. l

The intermediate part of the lower; rail- 16, is bent downwardly as atSt" and then horizontally as at 3| to be welded or otherwisesecured tothe lower edge of the lugL. The pattern run P is formed with a flatvertical web 32, the lower end of which is provided with a broadenedconcave chain engaging edge 33. The left side of the web 32 as shown inFig. 5 is provided with a wing 34 which is bent at right angles to theweb to lie against the part 30 of the bottom rail and be welded thereto.The web extends along part of the member [9 and is welded thereto, andalso rail 40 may be similar to rail l5. The bottom rail 4!, however,while having its left end formed in a manner similar to the left end ofrail i6, has its intermediate part 42 curved downwardly to the righthand horizontal end 43.

a horizontal right end 45, and a vertical part 46 to the left of edge 44terminating in a horizontal left end 41. The run P has its parts 45 and41 recessed, see Figs 11 and 12, to receive and be weldedto the lowerrail 4L.

Located between the lower rail 4| and the member 45 is a metallicsinuous reinforcing member 5i! which connects the part 42 of the railv4! to the run P. Extending between the rails 40 and..4l is a secondreinforcing metallic sinuous member 5|.

In both forms of the invention the vibrator lever may be provided with astop 55 to be received by an arcuate slot 56 in the gear G, and thisstop-is preferably secured to the lock knife lug L. a

- In'operation, the pattern chain It) moves under the pattern run andeither raises or lowers the vibrator lever, depending upon the size ofthe 'chain roll in engagement with the runs 33 or 44. Levers V and Vmove' angularly around the heel pin H to effect vertical movement of thevibrator gear G. Engagement of the latter with one or the'other of thepreviously mentioned but not shown mutilated cylinder gears effectshorizontal motion of the connector C.

From the foregoing it will be seen that I have provided a simple form ofpattern lever light in weight and made of top and bottom rails betweenwhich extend reinforcingsinuous metallic members which are welded orotherwise secured to the rails. The pattern run in each form of theinvention is connected to the bottom rail, and in the preferred formis'additionally connected to certain of the bends of the sinuous member19, whereas in the modified form a supplementar y reinforcing member 50is interposed between the pattern run P and the bottom rail All theparts of the vibrator lever are secured together as by welding, brazing,silver soldering or the like so that the lever becomes in effect anintegrated unit possessing considerable strength but being comparativelylight in weight.

Having thus described my invention it will beseen that changes andmodifications may be made therein bythose skilled in the art'without:de-

parting from the spiritand scope of theinvention and I do not wish to belimited to the details "herein disclosed, but what I claim is:

In aloom pattern'mechanism vibrator lever,

a pair of 'verticallyspaced tie rods extending lengthwise ofthe lever, aheel pin bearing secured "to said tie "rods adjacent one end of thelever, a lock knife lug secured to said tie rods The pattern run P has aconcave edge 44 similar to edge 33,

4 adjacent the other end of the lever, a pattern chain run on the lowertie rod, and a reinforcing wire of sinuous form extending between andsecured to said tie rods.

2. In a loom pattern mechanism vibrator lever, a, pair of verticallyspaced tie rods extending lengthwise of the lever, a bearing membersecured to said tie rods adjacent one end of the lever, a pattern chainrun on the lower tie rod,

and reinforcing wire means of sinuous form extending between and securedto said tie rods,'

part of said reinforcing wire means being over said pattern chain run.

3. In a loom pattern mechanism vibrator lever, a pair of verticallyspaced tie rods extending lengthwise of the lever, a heel pin bearingsecured'to said tie rods adjacent one end of the lever,. a lock knifelug secured to said tie rods adjacent the other end of the lever, areinforcing wire of sinuous form extending between and secured to saidtie rods, and a pattern chain run secured to thelower tie rod and toparts of the reinforcing wire. v

4. In a loom pattern mechanism vibrator lever, a pair of verticallyspaced tie rods extending lengthwise of the lever, a bearing membersecured to said tie rods adjacent one end of the lever, a reinforcingwire of sinuous form extending between and secured to said tie rods, anda pattern chain run secured to the lower tie rod and t parts of saidreinforcing wires.

5. In a loom pattern mechanismvibrator lever, a pair of verticallyspaced tie, rods extending lengthwise of the lever, a bearing membersecured to said tie rods adjacent one end of the lever, a reinforcingwire of sinuous form extending between and secured to said tie rods, anda pattern chain run having a web secured to the lower tie rod and partsof the reinforcing wire and having a concave pattern chain engaging edgeextending laterally from the web under the lower tie rod. 7

6. In a loom pattern mechanism vibrator lever, a pair of verticallyspaced tie rods extending lengthwise of the lever, a bearing membersecured to said tie rods adjacent one end of the lever, a reinforcingwire of sinuous form extending between and secured to said 'tie rods, apattern chain run secured to the. lower tie rod and having a partthereof spaced below said lower tie rod, and a second reinforcing wireof sinuous form between the lower tie rod and said part of the patternchain run.

'7. In a loom pattern mechanism vibrator lever, a pair of verticallyspaced tie rods extending lengthwise. of the lever, a bearing secured tosaid tie rods adjacent one end of the lever, a lock knifelug secured .tosaid tie rods adjacent the other endof the lever, a reinforcing wirev ofsinuous form extending between said bearing and lug and extending alsobetween and secured to said tie rods, a pattern chain run secured to anddepending from the lower tie rod intermediate said bearing and lug andhaving a part thereof spaced belowthe lower tie rod, and a secondreinforcing wireof sinuous form extending between the lower tie rod and.said part of the pattern chain run. V r

WILLIAM A. BLANCHARD.

